As a native and lifelong resident of the Big Apple, I consider 15 localities named New York to be 14 too many.
There is one extinct or conjectural locality whose New Yorkness I don’t grudge:
After Duke William II of Normandy conquered England, some of the displaced English elite emigrated to the Black Sea region, where they may have established a colony called New England or England, with settlements called New London or London and New York or York.
